Canon Mount Adapter - lens adapter
$170.00
$162.99
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Mfg # 2971C002
CDW # 6305668
| UNSPSC 45121600
Know your gear
The Mount Adapter EF-EOS R gives you the ability to utilize any Canon EF or EF-S lens with the EOS R camera, letting you use your existing lenses with the camera and allowing you to expand your horizons. Lightweight, compact and easy to attach, the Mount Adapter EF-EOS R makes it possible to use EF and EF-S lenses without compromising functionality, speed or quality. With a stylish design that matches the EF and EF-S lens look and a sturdy, dust- and water-resistant construction, the Mount Adapter EF-EOS R makes it easy to adapt to more lens choices and possibilities.
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Canon Mount Adapter - lens adapter is rated
4.50 out of
5 by
24.
Rated 5 out of
5 by
hausolive from
Great Purchase!
I have been using the mount to convert my EF 75-300mm lens for my R50 body, and it's been a seamless transition. Can't recommend enough!!! Worth the money.
Date published: 2026-08-06T00:00:00-04:00
Rated 5 out of
5 by
cus1871 from
Excellent adapter for older EF/EF-S glass
I had hoped to be able to get all new RF lenses but was unable to before a trip and so I ordered the basic adapter and used it with a Sigma 18-300mm EF-S lens on the trip with excellent results. The adapter and EOS RP body gave excellent sharpness and colors. Sharpness was better that I have ever achieved on a T2i and 77D. Now I may look to get some good EF lenses to use with the adapter but I love the 2 RF lenses I have purchased so I get the best of both worlds.
Date published: 2023-08-16T00:00:00-04:00
Rated 5 out of
5 by
Satisfied Customer 1000 from
Solid customer support
Great buying experience with the product representative. The rep was also knowledgeable of the product offerings.
Date published: 2023-08-14T00:00:00-04:00
Rated 5 out of
5 by
White eyed Vireo from
Works Great
Works just fine. Have had no problems at all! Does what it's supposed to do.
Date published: 2023-04-16T00:00:00-04:00
Rated 5 out of
5 by
Joel123 from
EF to R lens adapter
Works flawlessly. Excellent fit/finish - like a part of the camera, not an attachment. Only thing missing is tripod mount (like the EF-M adapter would be great).
Date published: 2023-07-06T00:00:00-04:00
Rated 5 out of
5 by
Boogey from
Piece of plastic connecting my R5 to heavy EF lens :(
Movement with heavy lens is concerning. Lots of plastic and the wiggle in connection concerns me, especially since I shoot action. But if this is what it takes to use my old EF lens then will make do.
Not happy that their is no third party options for RF... Not all of us can afford $2000/$3000 glass.
Date published: 2024-08-19T00:00:00-04:00
Rated 5 out of
5 by
Nash from
Ref Mount Adapter EF-EOS R
Refurbished product but works great. Item is in great shape
Date published: 2024-09-12T00:00:00-04:00
Rated 5 out of
5 by
Max S from
Good deal
Works well with all my EF lenses. The overall camera length is then about the same as if they mounted on my old SLRs.
Date published: 2023-07-13T00:00:00-04:00
Rated 5 out of
5 by
BobR from
Happy Customer
Works Great fits camera and does what I want it to do
Date published: 2023-07-22T00:00:00-04:00
Rated 5 out of
5 by
Retired Engineer from
Quality and Function
I am completely satisfied with the item. It does just what is described on the Amazon site. The quality and workmanship is excellent.
Date published: 2023-07-30T00:00:00-04:00
Rated 5 out of
5 by
Supe20 from
Mount Adapter EF-EOS R
Works as expected! Fits my EF lenses perfectly on my new R6 Mk II camera.
Date published: 2023-05-02T00:00:00-04:00
Rated 5 out of
5 by
CM757 from
Works fine
I was gifted an R7 to replace my 77D. I don't have the funds currently to buy new lenses so I bought the adapter so that I could use what I have. I haven't used it much, shot some wildlife photos while on vacation. It worked fine for that.
Date published: 2024-01-04T00:00:00-05:00
Rated 5 out of
5 by
Dee D from
Rf-Ef adapter
Easy to use. Works as it should. Allows me to use my EF glass on my R50
Date published: 2024-01-03T00:00:00-05:00
Rated 5 out of
5 by
photon from
EF to R lens adapter - OK EF, not Tamron
A mount adapter that permits long-tern Canon camera users to use those EF lens's, some that are excellent and quite expensive, with your new R5 camera body. A simple job to do, and it seems to work OK with my EF lens, but my nice Tamron ultra-wide angle lens is not usable due to strong vignetting.
Date published: 2024-06-08T00:00:00-04:00
Rated 5 out of
5 by
Paparazzi Paul from
Canon has let me down
I never received this. My package was lost and I have been trying for two weeks to get a replacement. No help from FedEx. No help from Canon. I am very disappointed
Date published: 2025-09-04T00:00:00-04:00
Rated 5 out of
5 by
Grayden Art from
Great adaptor.
Well made. Great interface between the EOS lenses and R Bodies. I have one on my R and my R5.
Date published: 2024-11-25T00:00:00-05:00
Rated 5 out of
5 by
JimH from
Could be better
Seems a little difficult to go on my camera. I have tried several times and each time is the same.
Date published: 2023-06-10T00:00:00-04:00
Rated 5 out of
5 by
Dwayne P from
Keep your current lens collection, upgrade to mirrorless
Once you align the correct dots, it fits snug and secure.
Date published: 2023-11-02T00:00:00-04:00
Rated 5 out of
5 by
faunie from
It just works... essential for my switch to mirrorless
Whoever in Canon came up with the concept for these adapters deserves a promotion. It has allowed me to keep utilizing my "investment" of Canon lenses. It is easy to use and it just works.
Date published: 2023-05-14T00:00:00-04:00
Rated 5 out of
5 by
taraxd from
Adaptor
This adapter is very light and easy to use. holds EF lenses easily
Date published: 2023-05-13T00:00:00-04:00
Rated 5 out of
5 by
Thomas W from
Works great
Works perfectly, I just wish it wasnt so long but I understand they had a reason.
Date published: 2024-12-18T00:00:00-05:00
Rated 5 out of
5 by
N slash A from
Love this piece!
Decent price for just the adapter, love the versatility it adds to EOS R camera line, being able to use the high-quality EF lens I have on this camera is absolutely amazing!
Date published: 2025-05-30T00:00:00-04:00
Rated 5 out of
5 by
Phoenix from
Totally Appreciated.
I am pleased to have purchased this adapter for it provided the opportunity of utilizing the many EOS L lenses purchased.
Date published: 2026-04-08T00:00:00-04:00
Rated 5 out of
5 by
Myer Kwavnick from
EF to RF Adapter
Works as advertised. It does the job. I had no trouble using this product
Date published: 2026-05-16T00:00:00-04:00